Jump to content

2020 1500 Custom 4.3 Vibration

Seth Kozlowski
 Share

Recommended Posts

Seth Kozlowski New Member

Seth Kozlowski

Posted
Posted (edited)

So I have a 2020 Silverado 1500 crew cab 2wd Custom with 371 miles on it. When the vehicle is in park it has a rough idle/vibration in the driver seat/front cab. The rpms are not moving at all but I can very strongly feel it idling. When I make the rpms go above 500 it goes away. This only happens when not moving in any gear. When driving, the truck is as smooth as can be.

Edited by Seth Kozlowski
Vicarod Enthusiast

Vicarod

Posted
Posted

That's your penance for not buying a V8...

 

All joking aside, it's more than likely normal and you aren't used to the lope of this particular engine.

I don't think these V6's are known to be particularly rough?

 

Good luck with your new truck.

jagabom (Esquire) Enthusiast

jagabom (Esquire)

Posted
Posted (edited)

Some have had a tune to increase idle by 100 rpm and the vibration disappears.  My 2014 did it but GM wouldn't raise the idle for me.  Then it might violate warranty.

Jim

Edited by jagabom
  • 1 year later...
Jgvet New Member

Jgvet

Posted
Posted

Did you ever get this resolved? My 2021 v6 silverado has had the same issue. Been back to the service centers 6 times now, they keep claiming its normal. I've had 3 independent mechanics sit in the truck and all say "bullshit, get them to fix it." I currently have in for service again, had them give me a loaner and basically had to refuse to take the truck back till they opened a case with TAC. Im not holding my breath anything will happen. I think they know its a design flaw they cant fix. Haven't decided what ill do yet it if this step doesn't get me anywhere. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted

It is the nature of the beast. Mine has done it since new but not my first V6 so it never bothered me. Even a balance shaft does not remove all low rpm rocking couple. Others that said increasing the idle even 50 rpm will help. Nothing the OEM will do so yea....design flaw by design. 

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

When my mother in law quit driving and gave my wife her CRV. I looked up the quirky complaints and watch out complaints. The main one was vibrating idle. Yup, it does when the AC comes one. I can’t even count the number of vehicles I owned that did that. In the old days it had a fast idle switch to help with that, even on big blocks. Out of the four vehicles I have my wife’s Genesis is the only one that doesn’t. Even my 02 Avalanche  does a little. If I was driving a 100K vehicle I’d complain. Otherwise no big deal.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • riddler
      Oil Consumption

      By riddler · Posted

      Your right on. 👍🏻
    • c4racer2
      Trim level custom/pro

      By c4racer2 · Posted

      Seats matter a lot.  I would start there - good advise here.  I had a 2018 LT Colorado before my 2026 LT Silverado, and the seats are so much better in the new one it's not even a contest.  That was one thing I always hated about the Colorado and I owned two of them spanning 10 years - but I did it so I could park in the garage mainly.  Now I have a much larger property and a huge barn so I have plenty of parking options and a full size is more useful for maintaining the property and current hobbies as well.  I wasn't evenb thinking about the seats as part of the reason for the move to the Silverado, but after two back to back 700mile road trips I am sold on the LT seats w/ leather 100%.  The other LT features are also nice - one thing I really like is the power rear window on the back window by the bed.  And the lighting in the bed is also very nice to have - I doubt that comes on the lower models.  Power tailgate - also quite useful - it's a heavy slug!  What else - I could take or leave the screen - but heated seats and steering wheel and cruise control on the steering wheel is very useable - I would never want to live without that.  Even the colorados had that.
    • c4racer2
      Oil Consumption

      By c4racer2 · Posted

      I think the ship has sailed on the fuel injection type - everything is getting direct now.  Does it help with mpg?  Not really and nobody buying a HD truck really cares anyway.  But that is what it is at this point.  Piston rings is something they may well adjust over time to get them right.
    • Another JR
      Ac not keeping up

      By Another JR · Posted

      I don’t have detailed measurement data, but this past March we were hiking and camping in Death Valley and the Las Vegas area when this Spring’s heat wave hit with 105 plus temperatures and our 2021 L8T system kept our crew cab as cool as we wanted it (68F setting) with no trouble. Fan flows on auto once stabilized were fairly low. It seems like the OP’s system should be performing better. 
    • c4racer2
      summer road trips in the 2026 2500HD

      By c4racer2 · Posted

      Yes that's correct on the route to Durango - we just followed what google maps recommended.  That is quite the pass btw - very steep going back down.  I didn't even need manual mode - I just used cruise control and set the truck at 50 I think when it was a 45 posted speed and for the most part it just held it there by keeping it in the right gear - everyonce in awhile there is a sharper turn that I just braked for - but it was pretty smooth going down it on both sides.  Amazing views around there for sure - we had no real time to stop, were on the clock for a set-up time, but we did stop in some 2 horse town somewhere a couple hours oustide of Durango in the middle of nowhere for burgers.   And yes - lots up up and downs on the Durango trip but I think it's a big difference going 70 vs. going 80-83 with the aero in play with these big trucks.  Even the much smaller Colorado does reallt bad on gas going up over 70, I think I would have been lucky to get 18 on that trip in the Colorado honestly.  The full size is definately more comfy for a long road trip too, and the amount of gear we had would have meant two vehicles if I still had the Colorado.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...